JPH04502085A - 高解像度磁気―光学読取りヘッド - Google Patents

高解像度磁気―光学読取りヘッド

Info

Publication number
JPH04502085A
JPH04502085A JP2513925A JP51392590A JPH04502085A JP H04502085 A JPH04502085 A JP H04502085A JP 2513925 A JP2513925 A JP 2513925A JP 51392590 A JP51392590 A JP 51392590A JP H04502085 A JPH04502085 A JP H04502085A
Authority
JP
Japan
Prior art keywords
read head
magnetic
head according
optical
pole pieces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2513925A
Other languages
English (en)
Japanese (ja)
Inventor
コリノー，ジョセフ
ヌーベール，ソフィー
Original Assignee
トムソン―セーエスエフ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by トムソン―セーエスエフ filed Critical トムソン―セーエスエフ
Publication of JPH04502085A publication Critical patent/JPH04502085A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4907—Details for scanning
    • G11B5/4915—Structure of specially adapted heads
    • G11B5/4923—Structure of specially adapted heads in which zones of the transducing part are being physically controllable
    • G11B5/493—Control of magnetic properties, e.g. saturation, anisotropy
    • G11B5/4938—Control of magnetic properties, e.g. saturation, anisotropy of thin magnetic films
    • G11B5/4946—Control of magnetic properties, e.g. saturation, anisotropy of thin magnetic films for formation or displacement of magnetic domains, e.g. walls, bubbles
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10547—Heads for reproducing using optical beam of radiation interacting with the magnetisation of an intermediate transfer element, e.g. magnetic film, included in the head

Landscapes

  • Magnetic Heads (AREA)
  • Measuring Magnetic Variables (AREA)
  • Optical Head (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
JP2513925A 1989-10-03 1990-10-03 高解像度磁気―光学読取りヘッド Pending JPH04502085A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8912895A FR2652670B1 (fr) 1989-10-03 1989-10-03 Tete de lecture magnetooptique a haute resolution.
FR89/12895 1989-10-03

Publications (1)

Publication Number Publication Date
JPH04502085A true JPH04502085A (ja) 1992-04-09

Family

ID=9386033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2513925A Pending JPH04502085A (ja) 1989-10-03 1990-10-03 高解像度磁気―光学読取りヘッド

Country Status (10)

Country Link
US (1) US5227938A (fr)
EP (1) EP0421874B1 (fr)
JP (1) JPH04502085A (fr)
KR (1) KR100230667B1 (fr)
AT (1) ATE166173T1 (fr)
CA (1) CA2042579C (fr)
DE (1) DE69032306T2 (fr)
ES (1) ES2115591T3 (fr)
FR (1) FR2652670B1 (fr)
WO (1) WO1991005345A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000034950A1 (fr) * 1998-12-07 2000-06-15 Fujitsu Limited Dispositif de reproduction d'informations, tete de reproduction d'informations ayant la puce, et procede de reproduction d'informations

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685518B1 (fr) * 1991-12-23 1994-02-04 Thomson Csf Circuit d'horloge pour systeme de lecture d'informations sequentielles.
FR2689293B1 (fr) * 1992-03-27 1994-05-13 Thomson Csf Dispositif de lecture d'un ensemble d'elements resistifs.
FR2696037B1 (fr) * 1992-09-18 1994-11-04 Thomson Csf Dispositif de lecture magnétique.
FR2712419B1 (fr) * 1993-11-09 1995-12-22 Thomson Csf Tête magnétique d'enregistrement/lecture.
FR2735269B1 (fr) * 1995-06-06 1997-07-25 Thomson Csf Tete d'enregistrement/lecture matricielle a structure zigzag
US5920538A (en) * 1998-06-11 1999-07-06 Tandberg Data Asa Magneto-optical readout method and magneto-optical readout head and method for making same
US6249824B1 (en) * 1998-12-12 2001-06-19 Joseph Reid Henrichs Magnetic data storage fixed hard disk drive using stationary microhead array chips in place of flying-heads and rotary voice-coil actuators
US6266712B1 (en) * 1999-03-27 2001-07-24 Joseph Reid Henrichs Optical data storage fixed hard disk drive using stationary magneto-optical microhead array chips in place of flying-heads and rotary voice-coil actuators
ATE237177T1 (de) 1999-07-09 2003-04-15 Thales Sa Spurfolgesystem zur aufzeichnung/wiedergabe eines informationsträgers und aufzeichnungsträger
DE102004025937A1 (de) * 2004-05-27 2005-12-22 Giesecke & Devrient Gmbh Vorrichtung und Verfahren zur Untersuchung von magnetichen Eigenschaften von Objekten

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120001B (en) * 1982-04-28 1985-10-30 Tdk Corp An optical magnetic reproduction system
US4618901A (en) * 1982-07-19 1986-10-21 Nippon Telegraph & Telephone Public Corporation High density magnetic head
JPS60143462A (ja) * 1983-12-29 1985-07-29 Fuji Photo Film Co Ltd 磁気記録情報再生方法および装置
US4707755A (en) * 1985-03-20 1987-11-17 Hitachi, Ltd. Optical read-out magnetic head
JPH071561B2 (ja) * 1986-02-12 1995-01-11 株式会社日立製作所 光磁気型再生磁気ヘツド
DE3776359D1 (en) * 1986-02-13 1992-03-12 Sony Corp Duennschichtmagnetkopf.
FR2605783B1 (fr) * 1986-10-28 1992-05-15 Thomson Csf T ete magnetique d'enregistrement/lecture en couches minces et son procede de realisation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000034950A1 (fr) * 1998-12-07 2000-06-15 Fujitsu Limited Dispositif de reproduction d'informations, tete de reproduction d'informations ayant la puce, et procede de reproduction d'informations
US6580667B2 (en) 1998-12-07 2003-06-17 Fujitsu Limited Magneto-optical reproducing head having a plural transfer facing surfaces and insulation gaps

Also Published As

Publication number Publication date
ES2115591T3 (es) 1998-07-01
CA2042579C (fr) 2001-12-04
WO1991005345A1 (fr) 1991-04-18
DE69032306D1 (de) 1998-06-18
FR2652670B1 (fr) 1995-06-23
ATE166173T1 (de) 1998-05-15
US5227938A (en) 1993-07-13
CA2042579A1 (fr) 1991-04-04
KR920701957A (ko) 1992-08-12
KR100230667B1 (ko) 1999-11-15
DE69032306T2 (de) 1998-09-03
EP0421874A1 (fr) 1991-04-10
EP0421874B1 (fr) 1998-05-13
FR2652670A1 (fr) 1991-04-05

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